今日沪深两市成交额6783亿元，较昨日减少661亿；北向资金净卖出64.13亿元。
沪深300今日成交额1684亿，昨日1734亿，增加50亿；
国证2000今日成交额1859亿，昨日2104亿，减少245亿；
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